Our Columbus 375 is new as of July 2015.. From the very beginning, the toilet plugged up with very little use. It has been serviced twice and supposedly the problem was fixed each time. After two days of little use, it is plugged again. We put very little compostable toilet paper down it. Very little solids have been put in it. The service guy said that there is no reason why it should be plugging. Our sewer vent was checked to make sure it wasn't blocked. We are at our wits end. AND, besides this major problem, our refrigerator isn't working at all for the second time since we got it. It isn't the fuse. We are thinking we got a real lemon with this 5th wheel. If anyone has any ideas to fix our sewer problem, we would appreciate it. The service company hasn't been able to solve the problem.

The toilet in our new 2016 Columbus 375 5th wheel kept plugging when it should not have. We knew there was an obstruction somewhere. Wayne, at the Forest River factory, finally figured out that when the black tank was installed, someone in the factory put the pipe going into the tank all the way to the bottom instead of cutting it off properly, which would have allowed solids to pass through. 3 1/2 mo. later, the problem is finally fixed. I hope this doesn't happen to anyone else.

I posed this over in our Columbus group of FB since others have been having issued with their toilet and tank being full, ans this may be the problem with other Columbus as well. I hope you don't mind that I shared this with our Columbus group.